EN 1109:2013

Flexible sheets for waterproofing - Bitumen sheets for roof waterproofing - Determination of flexibility at low temperature

This European Standard specifies the determination of flexibility of bitumen sheets at low temperatures. The test can be carried out on the upper or lower face of the sheet either at a predetermined temperature or successively at different temperature steps to determine the cold bending temperature which represents a limiting temperature. Therefore, the test can be used to confirm a minimum cold bending temperature for a product or to determine the specific cold bending temperature for the product e.g. to determine the change of these properties as a result of artificial ageing.
In the case of sheets with the same bituminous compound on both sides and where the reinforcement is placed in the cross section visually closer to the upper surface, the test is performed on the bottom face only.
If the upper surface is covered with a non woven (e.g. tissue, fleece etc.) or metal facing, the test is performed on the bottom side only.
If the sheet on the upper surface is covered with permanent light surface protection and where the reinforcement is placed in the cross section visually closer to the upper surface, the test is performed on the bottom side only.

Abdichtungsbahnen - Bitumenbahnen für Dachabdichtungen - Bestimmung des Kaltbiegeverhaltens

Diese Europäische Norm legt die Bestimmung des Kaltbiegeverhaltens von Bitumenbahnen fest. Die Prüfung kann an der Oberseite oder an der Unterseite der Bahn entweder bei einer vorgegebenen Temperatur oder iterativ bei verschiedenen Temperaturstufen durchgeführt werden, um die Kaltbiegetemperatur, welche eine Grenztemperatur darstellt, zu ermitteln. Die Prüfung kann somit zum Nachweis einer für ein Produkt mindestens geforderten Kaltbiegetemperatur oder zur Ermittlung der für das Produkt spezifischen Kaltbiegetemperatur dienen, z. B. um die Veränderung dieser Eigenschaften durch künstliche Alterungs-verfahren festzustellen.
Bei Bahnen, die die gleiche Bitumenmischung auf beiden Seiten aufweisen und in denen die Trägereinlage im Querschnitt sichtbar dichter an der Oberseite angeordnet wird, ist die Prüfung nur an der Unterseite durchzuführen.
Falls die Oberseite mit einer Beschichtung aus Vliesstoff (z. B. Glasvlies, Polyestervlies, usw.) oder Metall bedeckt ist, ist die Prüfung nur an der Unterseite durchzuführen.
Falls die Oberseite der Bahn mit einem dauerhaften leichten Oberflächenschutz bedeckt ist und die Trägereinlage im Querschnitt sichtbar dichter an der Oberseite angeordnet wird, ist die Prüfung nur an der Unterseite durchzuführen.

Feuilles souples d'étanchéité - Feuilles d'étanchéité de toiture bitumineuses - Détermination de la souplesse à basse température

La présente Norme européenne décrit l’essai visant à déterminer le comportement au pliage à basse température des feuilles d’étanchéité. L’essai peut être effectué sur la face supérieure ou sur la face inférieure de la feuille bitumineuse, soit à une température prescrite, soit de manière répétée à différents niveaux de température, afin de déterminer la température de pliage à froid qui représente une température limite. L’essai peut de cette manière fournir la preuve de la conformité à la température minimale de pliage à froid exigée pour un produit, ou permettre de déterminer la température de pliage à froid spécifique du produit pour déterminer, par exemple, la modification de ces caractéristiques après vieillissement artificiel.
Dans le cas de feuilles revêtues du même composé bitumeux sur les deux faces et lorsque l’armature est placée, en coupe transversale, visuellement plus près de la face supérieure, l’essai est réalisé sur la face inférieure uniquement.
Si la face supérieure est revêtue d’une couche non tissée (par exemple, voile, etc.) ou métallique, l’essai est réalisé sur la face inférieure uniquement.
Si la feuille sur la face supérieure est revêtue d’une protection de surface légère et permanente et lorsque l’armature est placée, en coupe transversale, visuellement plus près de la face supérieure, l’essai est réalisé sur la face inférieure uniquement.

Hidroizolacijski trakovi - Bitumenski trakovi za tesnjenje streh - Ugotavljanje upogljivosti pri nizki temperaturi

Ta evropski standard določa ugotavljanje prožnosti bitumenskih trakov pri nizkih temperaturah. Preskus je mogoče izvesti na zgornji ali spodnji strani traku pri vnaprej določeni temperaturi ali v več zaporednih korakih pri različnih temperaturah in ugotoviti mejno temperaturo za hladno upogibanje. S preskusom je torej mogoče potrditi najmanjšo temperaturo za hladno upogibanje za proizvod ali določiti specifično temperaturo za hladno upogibanje za proizvod, npr. ugotoviti spremembo teh lastnosti zaradi umetnega staranja. Pri trakovih z enako bitumensko zmesjo na obeh straneh in kadar je nosilec nameščen v prečnem prerezu vidno bližje zgornji površini, se preskus izvede samo na spodnji strani. Če je zgornja površina prekrita s stalno lahko zaščito (koprena, voal) ali kovinsko oblogo, se preskus izvede samo na spodnji strani. Če je trak na zgornji strani prekrit s stalno lahko zaščito in kadar je nosilec nameščen v prečnem prerezu vidno na zgornji strani, se preskus izvede samo na spodnji strani.

General Information

• Status: Published
• Publication Date: 23-Apr-2013
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: CEN/TC 254 - Flexible sheets for water proofing
• Drafting Committee: CEN/TC 254/SC 1 - Bitumen sheets
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Sep-2025
• Completion Date: 02-Sep-2025
• Ref Project: SIST EN 1109:2013 - Flexible sheets for waterproofing - Bitumen sheets for roof waterproofing - Determination of flexibility at low temperature

Relations

• Replaces: EN 1109:1999 - Flexible sheets for waterproofing - Bitumen sheets for roof waterproofing - Determination of flexibility at low temperature
• Effective Date: 23-May-2012

Overview

EN 1109:2013 is a European Standard developed by the European Committee for Standardization (CEN) that specifies a test method for determining the flexibility of bitumen sheets used for roof waterproofing at low temperatures. This standard focuses on assessing the cold bending properties of bitumen waterproofing sheets to ensure their performance under cold weather conditions. It replaces EN 1109:1999 and introduces updates such as the use of a single coolant to improve test reliability.

Bitumen sheets are a critical component in roof waterproofing systems, providing essential protection against water ingress. Flexibility at low temperature is a key property that affects the durability and service life of bitumen sheet membranes, especially in cold climates.

Key Topics

• Scope
  Defines the method for evaluating the flexibility of bitumen sheets by bending specimens at controlled low temperatures to detect cracking.

• Test Principle
  Bitumen sheet specimens are bent 180° around a mandrel submerged in a temperature-controlled coolant bath. The samples are visually inspected for cracks to determine if the material maintains flexibility without failure.

• Test Conditions

  • Testing on either the upper or lower surface depending on the reinforcement and surface treatment.
  • Conditioning of samples at the target temperature for one hour before bending.
  • Cooling media specified as ethylene glycol/water or ethanol/water mixtures depending on the temperature range and sheet type.

• Flexibility and Cold Bending Temperature

  • Flexibility is defined as the ability to bend without cracking.
  • Cold bending temperature is the lowest temperature at which the bitumen sheet can be bent without cracking, representing a limiting temperature for performance.

• Apparatus
  Includes a mechanical bending device with fixed cylinders and a bending mandrel, immersed in a thermostatic bath maintaining temperatures from +20 °C to –40 °C.

• Sampling and Specimen Preparation
  Samples are taken according to EN 13416, avoiding edges and ensuring uniformity. Protective films are carefully removed without heat application, and specimens are conditioned prior to testing.

• Result Evaluation
  The standard requires testing five specimens per face, with flexibility confirmed if at least four specimens show no cracks.

• Precision and Repeatability
  The method includes guidance on repeatability and reproducibility based on interlaboratory studies per ISO 5725-1.

Applications

• Roof Waterproofing Quality Control
  EN 1109:2013 provides manufacturers, testing laboratories, and quality control personnel with a standardized method to verify the low-temperature flexibility of bitumen sheets used in roofing waterproofing systems.

• Product Development and Classification
  This standard helps characterize bitumen sheets during product development, ensuring that materials meet performance criteria for cold climate applications.

• Aging and Durability Assessment
  By determining changes in cold bending temperature before and after artificial aging, manufacturers can assess the impact of environmental exposure on flexibility.

• Compliance and Certification
  Compliance with EN 1109:2013 is essential for products marketed in European countries, ensuring conformity with harmonized European product specifications for waterproofing sheets.

Related Standards

• EN 13416 - Flexible sheets for waterproofing - Rules for sampling bitumen sheets
  Provides guidelines on sample selection, ensuring representativeness for testing flexibility under EN 1109.

• EN 13707 / EN 13969 - Bitumen roofing and waterproofing sheets standards
  Set criteria for performance and durability of bitumen membranes, often referencing EN 1109 for flexibility testing.

• ISO 5725-1 - Accuracy (trueness and precision) of measurement methods and results
  Underpins the interlaboratory precision validation for EN 1109 test procedures.

---

Keywords: EN 1109:2013, bitumen sheets, roof waterproofing, flexibility test, cold bending temperature, low temperature performance, waterproofing membranes, bitumen roofing sheets, durability testing, European standards, CEN waterproofing standards.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hidroizolacijski trakovi - Bitumenski trakovi za tesnjenje streh - Ugotavljanje upogljivosti pri nizki temperaturiAbdichtungsbahnen - Bitumenbahnen für Dachabdichtungen - Bestimmung des KaltbiegeverhaltensFeuilles souples d'étanchéité - Feuilles d'étanchéité de toiture bitumineuses - Détermination de la souplesse à basse températureFlexible sheets for waterproofing - Bitumen sheets for roof waterproofing - Determination of flexibility at low temperature91.100.50Veziva. Tesnilni materialiBinders. Sealing materials91.060.20StreheRoofsICS:Ta slovenski standard je istoveten z:EN 1109:2013SIST EN 1109:2013en,fr,de01-september-2013SIST EN 1109:2013SLOVENSKI
STANDARDSIST EN 1109:20001DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1109
April 2013 ICS 91.100.50 Supersedes EN 1109:1999English Version
Flexible sheets for waterproofing - Bitumen sheets for roof waterproofing - Determination of flexibility at low temperature
Feuilles souples d'étanchéité - Feuilles d'étanchéité de toiture bitumineuses - Détermination de la souplesse à basse température
Abdichtungsbahnen - Bitumenbahnen für Dachabdichtungen - Bestimmung des KaltbiegeverhaltensThis European Standard was approved by CEN on 14 March 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1109:2013: ESIST EN 1109:2013

Introduction This European Standard is intended for the characterisation and/or classification of bitumen sheets as manufactured or supplied before use. The test method relates exclusively to products, or to their components where appropriate, and not to waterproofing systems of such products and installed in the works. This test is intended to be used in conjunctions within the relevant European products specifications for bitumen flexible sheets for waterproofing. The test for flexibility at a low temperature is intended to determine the susceptibility to cracking of the bituminous coating on a sheet when bent under specified conditions. The test result is dependent on the type of coating, on the thickness of the sheet, type and position of the reinforcement and the behaviour of the surface material. The use of the test results directly to compare the performance of coatings in sheets of different composition is strictly limited because of the influence of parameters which have not been quantified. Only the results from sheets with the same composition can be used to compare the performance directly. The test primarily serves to characterise bitumen sheets. It can be used to evaluate the change in the cold bending behaviour during artificial ageing. It is not safe to relate the test results to the actual performance to be expected at low temperatures in service. Compared to EN 1109:1999, in this new version of EN 1109 one type of coolant is described, which will give more reliable results. SIST EN 1109:2013

1 Scope This European Standard specifies the determination of flexibility of bitumen sheets at low temperatures. The test can be carried out on the upper or lower face of the sheet either at a predetermined temperature or successively at different temperature steps to determine the cold bending temperature which represents a limiting temperature. Therefore, the test can be used to confirm a minimum cold bending temperature for a product or to determine the specific cold bending temperature for the product e.g. to determine the change of these properties as a result of artificial ageing. In the case of sheets with the same bituminous compound on both sides and where the reinforcement is placed in the cross section visually closer to the upper surface, the test is performed on the bottom face only. If the upper surface is covered with a non-woven (e.g. tissue, fleece etc.) or metal facing, the test is performed on the bottom side only. If the sheet on the upper surface is covered with permanent light surface protection and where the reinforcement is placed in the cross section visually closer to the upper surface, the test is performed on the bottom side only. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment
...